Coupe body had apparently been modified to have the gas tank
under the seat in part of 1920 production. Directive advising of change back to
the square tank in the rear deck made this date. The height of the coupe seat
seemed to be the problem.

MAR 10

Acc.235, Box 38, #697, Ford Archives

"We enclose you herewith sheet #3 of our paint
specifications on Coupe and Sedan bodies. This sheet gives you the information
covering those portions of the paint operations performed at the branches.
"We call your attention in particular to Operation #16,
wherein it is noted that all inside moldings, window jambs, windshield frames
and door jambs be given one coat of Black Satin Finish F-192."

APR 1

Acc. 575, Box 14, #832, Ford Archives

Oil holes in the frame rails for the brake lever shaft
discontinued.

APR 26

Acc. 575, Box 14, #836, Ford Archives

Bendix cover now painted black instead of zinc plated.

MAY 12

Engine production records, Ford Archives

"Began using Heinze commutators."

MAY 28

Engine production records, Ford Archives

Engine 5,000,000 built at 7:05 A.M. Given to Edsel Ford.

JUN 26

Acc. 235, Box 38, Ford Archives

"Please discontinue furnishing T6881, Top Dust Hood for
Touring Car, T6939 Top Dust Hood for Torpedo, and T1923, Tool Box, as regular
equipment on new cars as soon as your available stock is exhausted.
"Top hoods may be carried as extra parts in your service
stock and supplied at regular catalog price hereafter."

JUL 14

Acc. 1701. Model T Releases, Ford Archives

Specified that the shape of the spokes be changed from oval
to round. (This may have occurred earlier than this date.)

JUL 19

Acc. 235, Box 38, Ford Archives

"We wish to call your attention to the new style pressed
steel running board bracket which has gone into production and as shipments have
been made to some of the branches we ask that you kindly note the changes which
will go into effect through the adoption of this new bracket." (A list of
the parts followed.)

JUL 17

Acc. 235, Box 38, Ford Archives

"Supplementing our General Letter No. 793 under date of
June 18the, wherein we mention the fact that Sedan Side Curtains T10300A1, A2,
A3 and T10300B, are to be held for repairs only. This means that side curtains
will not be included in standard sedan equipment in the future." (These are
the side window curtains.)

AUG 3

Henry Ford Office Files, Ford Archives

The following letter was received from the Holley Carburetor Company:
"Dear Mr. Ford:
"A situation which I consider unjust to us has developed
at the Highland Park factory which I respectfully request receive your serious
consideration.

1. A contract was made between the Holley Carburetor Company
and the Ford Motor Company, September 1, 1920, in which the Ford Motor Company
was given a shop right to manufacture our NH carburetor, the consideration being
orders to be placed with us for 50% of the carburetors used on the Model T cars.
From September 1st to June 30th we received orders for 34% of the cars produced.

2. We installed machinery to produce 5,000 carburetors per
day. The above contract provided for one year's notice of cancellation. This
notice was given us on April 21st, 1921. Since that time, machinery has been
installed in the Highland Park factory to produce carburetors known as Model F,
which is identical with Model NH with the exception of a slight change in the
mixer chamber venturi, as per sketch attached. We are informed that they have
orders to produce 3000 of these carburetors per day while we have never produced
more than 1,800 per day and have been laying men off a portion of each month.

"We spent about seven months and very nearly $75,000 in
perfecting the NH carburetor and so far as the writer knows there are not
complaints on workmanship. Our price has been from 11 to 30 cents per carburetor
lower than Kingston and, to the best of our knowledge and belief, it is also
lower than the cost of the Model G made at the Rowena Street plant. Our
relations have been cordial and satisfactory in every way and we are at a loss
to understand the reason for the action taken at Highland Park as it is
absolutely unjust and only leads toward an organization that will permit such
action to be taken."

There is an attached drawing showing
the venturi designs for the NH and Model F. The NH has the "straight
through" bore while the Model F has the venturi that dips in the middle
¾
what we usually think of as the later NH. It is interesting that the Ford built
carburetors had this feature earlier than the Holley.

The Holley letter was accompanied by a letter from F.H. Diehl
the Ford Motor Company's purchasing agent. He stated that not only was Ford
making Model F's, but that they were building Model G's as well. And they were
buying Kingston's too. These documents suggest that Model T's came with four
different carburetors from Sept. 1, 1920 to Aug., 1921: The Holley NH with the
straight thru design, the Model F, the Model G and the Kingston.

(The above was discovered by Trent Boggess during a visit to the Ford
Archives in February 1997.)

AUG 6

Engine production records, Ford Archives

"Began to center commutator counterbore with
camshaft."

AUG 9

Engine production records, Ford Archives

"New style crankcase in all production."

OCT 10

Engine production records, Ford Archives

"Began brass rollers" (commutator). By October 13
they were using all brass rollers.

OCT 15

Acc. 78, Box 47-49, Ford Archives

Sample "new style" bodies shipped from Highland
Park to branches, to be used as samples.

OCT 25

Engine production records, Ford Archives

"New commutator shield begun." (The center hole now
had a lip.)

OCT 28

Acc. 1701. Model T Releases, Ford Archives

"Added slot for stop pin in bottom," referring to
the steering gear box under the steering wheel. "Outside of cup to be
machined and nickel plated."

NOV 1

Engine production records, Ford Archives

First engine with one-piece valve door. The older two-door
engines continued until April 3, 1922.